feat: Chat completion supports multi-modal input (images and text). Text-to-speech supports streaming. (AEGHB-963)

[icyqwq]

Text-to-speech supports streaming.

Description

1. Chat completion supports multi-modal input (images and text).
2. Text-to-speech supports streaming.
3. 🚨 Includes a breaking change: the message function in chat completion now includes a new type parameter to specify the type of multi-modal input.

Related

Testing

Chat completion

// text
result = chatCompletion->message(chatCompletion, "text", "tell me a joke", false);
// image
result = chatCompletion->message(chatCompletion, "image_url", "https://upload.wikimedia.org/wikipedia/commons/thumb/d/dd/Gfp-wisconsin-madison-the-nature-boardwalk.jpg/2560px-Gfp-wisconsin-madison-the-nature-boardwalk.jpg", false);

Streamed tts

audioSpeech->speechStream(audioSpeech, "Sample text", [](const uint8_t *data, size_t len) {
    if (len == 0) {
        return;
    }
    size_t bytes_written;
    i2s_write(I2S_NUM, data, len, &bytes_written, portMAX_DELAY);
    i2s_zero_dma_buffer(I2S_NUM);
  });

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Checklist

Before submitting a Pull Request, please ensure the following:

• 🚨 This PR does not introduce breaking changes.
• All CI checks (GH Actions) pass.
• [ x ] Documentation is updated as needed.
• [ x ] Tests are updated or added as necessary.
• [ x ] Code is well-commented, especially in complex areas.
• [ x ] Git history is clean — commits are squashed to the minimum necessary.

[CLAassistant]

All committers have signed the CLA.

[github-actions]

Warnings

⚠️

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👋 Hello icyqwq, we appreciate your contribution to this project!

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[lijunru-hub]

@leeebo Please add tag openai

[leeebo]

Hi @icyqwq thanks for your contribution, we will review it ASAP!

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Files not reviewed (3)

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[lijunru-hub]

@icyqwq Since the OPENAI component has been modified, could you rebase onto the latest esp-iot-solution? This will allow us to proceed with this MR.

[lijunru-hub]

Additionally, it seems that the image URL string is "input_image". Could you double-check?